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选修8《Writing》优质课PPT课件下载
amazing, vast, fantastic, fascinating,
mysterious...
Cassini space probe
Disscuss the questions about the passage on Page 64
1.What tense does the writer use to give the news
in the first sentence?
2.What other tenses does the writer use?
3.How does the writer keep the reader's interests?
4.What verb forms does the writer use for opinions?
5.In what respect does the writer compare Saturn and Titan and Phoebe?
Think over
The anwers are as follows:
（1）present perfect tense.
（2）Past simple / present simple / present continuous / simple future tense
（3）He gives new information in each paragraph.
（4）Present simple tense.
（5）He compares them with the Earth and our moon.
Think over
Discussion
Read the passage again and find sentences which show these features：
.
a surprising fact
an expert opinion
the future
the history